I am Vaastu Consultant And a VK user . With vk I have experimented very important energy and powerful energy . Violet light . This was done to test the presence of entity in a place. When request was placed with vk to bring pure violet light in that house , in 5 minutes the entire glass table fell down and broke into pieces while the child of my client was sitting near the table and nothing happened to the child but glass broke into many pieces . Child was protected due to presence of violet light . I have recommended VS for that house to remove all bad energies.
Thanks to VK and Sharat Sir